Description of problem:
In Host Edit Form, overriding a 'long key name smart variable' doesn't truncates the key name.

Version-Release number of selected component (if applicable):
foreman-1.11.0-0.develop.201510151605git8893c3b.el7.noarch

How reproducible:
Always

Steps to Reproduce:
1. In Puppet class, Create a smart variable with a long key name.
2. Add above puppet class to any host.
3. In Host, under parameters tab override the smart variable value and observe the smart variable name appears under the section 'Puppet class overrides'.
4. Hover on that name.

Actual results:
The smart variable name is not truncated and not showing the full name of smart variable.

Expected results:
The smart variable name should be truncated and should display the full name.